Question

A body moves a distance of 10 m along a straight line under the action of a force of 5 newton. If the work done is 25 joule, the angle which the force makes with the direction of motion of the body is-

• A. 0⁰
• B. 30ŗ
• C. 60⁰
• D. 90⁰

Answer 1

Answer: (C)

60⁰

Answer 2

FScosq = 25 or 5 × 10 cos q = 25

or cosq = $\frac { 25 } { 50 }$ = $\frac { 1 } { 2 }$ \ q = 60